Multiple-speed gearing.



P., WINKLER. MULTIPLE SPEED GEA'RING. APPLICATION FILED MAY 2a, i912.

- Patented Nov. 26, 1912.

2 SHEETB-SEBET l.

Witnesses f: WMM/QV, gm a 61M inventor P. WINKLER. MULTIPLE SPEEDGBARING'. APPLICATION FILED`-MAY 26, 1912*. l A Y, 1,045,238. y PatentedNqv.26,1912.

2 SHEETS-SHEET 2.

Witnesses MWQMMFZMM QW ff 'UMTE STATES FRANZ WINxLER, or scHwEINFUR'r,GERMANY, AssIGNoR 'ro SGHWEINFURTER PRCISIONS-KUGEL-IJAGER-WERKE FICHTELSACHS, 0F SCIEIWEIN'FUIS/J?,` GER' MANY.

MULTIPLESPEED GEARING.

Loiaase.

Specification of` Letters Patent. I

Patented Nev. 2e, mi2.

Application ledMay 28, 1912. SerialANo. 700,226.

. gearing enabling threespeeds to be produced by the adjustmentofcertain elements of the combined gearing. In this device two sets ofplanet-gearings are provided and positively connected with one anotherby their. planet-wheels rigidly united, each set of planet-wheelsmeshing with a separa-tev sun-wheel loosely lrotatable on the axle ofthe gear.l An internally toothed rim is provided on the driving body andmeshes with one set of planet-wheels, while the pivot pins of vtheplanet-wheels are attached to the driven member or vice versa.

The main object of the invention is to' so construct the sun-wheels thatthey can be connected to rotating or stationary parts of the gearing.

A further objectof the invention is tol reduce the number of operativeelements required in combination with the gearing for -obtain1ng thesaid effect. These objects are attained by so arranging the sun-wheelsthat one of them which is displaceable also forms the coupling memberofthe other sun-wheel and is capable of coupling the same with theplanet-wheel carrier for set-ting the entire gearing idle, or with astationary part, thus rendering the corresponding planet-wheel-setoperative, while in` its middle position the said displaceable combinedsun-wheel and coupling member is fixed stationary and. produces workingoi" its own planet-wheel set. To this endv the movable sun-wheel islocated in the bore ofthe non-displaceable sun-wheel having clutch teethadapted to engage an additional toothed rim of the movable sunwheel`situated upon its opposite end and being the clutch member permittingthe various connections.

In y the accompanying drawings which form a part of this specification,a multiple speed gearing embodying the invention is represented, aconstruction of double planetgearing being shown for purpose of example,in order to illustrate the main features of the gearing.

and their couplingsy the' sun-wheel of the Figure 1 represents alongitudinal sectional elevation ofthe with a coaster hb of cycles.cross-section taken on the line 2-2 of Fig. 1. Figs. 3 and 4 illustratesome main parts of he gearing adjusted in different positions Fig. 2shows a as required forobtaining different speeds,l

the gearing being shown in longitudinal section similarly to Fig. 1.

Like numerals denote like parts throughout all figures of the drawings.

The pl anet-gearing comprises av number of stepped pinions and 6journaled on-the pivot pins 7. The smaller VI.wheels 5 mesh with aninternally toothed rim 10 which forms part of the driving member 8,while the pivots 7 are fast on the driven memberv t) and united at theirfree end s by a convenlent end plate. Further, the planet-wheels 5permanently mesh with a sun-wheel l2 which is rotatable but preventedfrom axial displacement. Inthe'borey of this sun-wheel a sleeve 1 6 isrotatable and axially displaceableon the axle 11'.l Upon this sleeve are-formed at one end a row of teeth 13 being planet wheels 6, and at theother end asimilar row of teeth17. A bearing cone 25, rigidly fastenedto the axle, is provided with a corresponding inside row of teeth 14,and the driven member 9 with an inside row of teeth 15. The arrangementis such that the rows of teeth 17 and 13 can be thrown into gear withthe two insiderows of teeth 14 and -15, respectively. A similar row ofinside teeth 23 is formed within the bore of the sun-wheel 12, intowhich teeth the row of teeth 17 of the sleeve 16 can be engaged.

gearing employed y The change of gearl to obtain various l speeds iseffected by sliding the combined sun-wheel and clutch sleeve 16 alongthe axle 1l, for which purpose any desired controlling device may beemployed. In the example the sleeve 16 is guided between two keys 18 and-19 passing through suitably formed slots in the axle 11 to permit oftheir axial shifting, these keys being fastened between shouldersl on arodv20 movable inside the hollow axle. VThe rtod 2O attached at one endto a convenient\\traction member, such as a chain 22, is continuallyunder the action of a spring 21 tending to force it toward the left. A

The device operates as follows: When the rod 2O is in its extremeleft-hand position gears being locked, the planet-wheels 5 and 6 cannotturn about their pivots 7, so that the driven member 9 -is 4rotated bythe driving member 8 at the same velocity by means ot the internal gear10 through .the planetwheels 5 and the pivots 7. When the chain 22 ispulled, whereby the sleeve 16 slides far enough to the right for the rowof teeth 17 to mesh partly with the stationary internal teeth 14 andpartly with the'- internal teeth 23 of the sun-wheel 12 (Fig. 3), thelatter is held fast, whereas the driven member 9 is, released from thetoothed rim 13 of'thesleeve 16. As soon `as the driving member A8 isrotated, the planet wheels 5'now roll on the gear 10 and simultaneously-on thesunwheel 12, and thus rotate on their pivots 7, the result beingthat the velocity ofthe driving member 8 imparted tothe driven member 9forming the planet-wheel carrier is speeded down.' AThis gives thegreatest speed reduction. When the sleeve 16 is moved by pulling thechain 22,'.into its extreme right-hand ositio'n, the teeth 174 arekdrawn back from t e teeth 23 but remain in gear with the teeth 14,while the rojw of. teeth 13 now engages with the planet-wheels: 6 (Fig.4 the sun-wheel -12 being 'simulta neously liberated. When thepartsarezin' thisposition and the gearing is driven,vthe,

planet-'wheels 5 yroll on the internal, toothed rim 10, andtheFplanet-wheels 6 on the teeth 13 of the stationary sleeve whichconstitutes their sun-wheel, the result being that 'now l the drivingmember 8 and the driven mem- -ber 9 again run at diierent speeds, andanintermediate reduction of speed occurs. Apart from the simplication ofthe gearlng owing to the reduction in the number of Iworking parts andthe consequent saving 1n space thisv particular arrangement in which theclutch sleevesimultaneously forms the sun-wheel of one of the sets ofplanet-wheels has .the important advantage that the planetwheels 6 areentirely out of gear when-not 1n operation, losses due to friction beingthus diminished. In addition, the gear ratlo can be suitably selected,because the planetwheels 6 can be made with a comparatively largediameter, since their sun-wheel is mounted directly on the axle, i. e.Ait is constituted by the -clutch sleeve of small diameter and slidablewithin the; other'sunwheel 12.

The gearing can be arrangedin various ways without .alteration to theessential parts and particular mode. of operation..

-one sf whichconstitutes the sun-wheel For example, the part 9 may bethe driving, l

and the part 8 the driven member; further, the internal gear 10 can meshwith the planet-wheels 6', in which cases a different gear ratio isobtained in the various positions. In the drawing the planet-wheelgearing is shown as applied to a bicycle hub. t will be understoodhowever that it can also be used for other purposes, e. g. as thedifferential gear in motor-cars, as the intermediate gear inmachine-tools and under certain. circumstances as a substitute for thechange-wheel gears in screw-cutting' .lathes and the like.

What I, therefore, broadly claim as my invention, and desire to secureby'Letters Patent, is; A

1. A planet wheel rearing for various speeds with two sets o planetwheel gearing united by their planet-wheels and having separaterotatably arranged sun-wheels, A

one. of the sun-wheels being axially dis-- placeable and the othersun-wheel that it constitutes the coupling means for the same inseveralof its positions and is adapted to couple the said sun-wheel torotatmg .and stationary parts of the gearing, respectively.

2. In-aJ planet-wheel gearing having two sets of planet gearingconnected by their respective planet-wheels, and having separatesun-wheels, one of them being non-displaceable, the other being locatedin the former and axially displaceable therein, and clutch meansprovided u on the said displaceable 'sun-wheel which 1s -adapted to.beroupled itself. and to couple the non-displaceable sitl'ons. =3.In aplanet-wheel gearin the combinationwith two sets of planet-w eelsconnected- 4with one another, of a non-displaceable sunwheel or one set-of planet-wheels, and an axially disnlaceable coupling sleeve havingtwo rows of outer teeth, one of them constituting the sun-wheel of theother set of `planet-wheels or clutch teeth,'respectively 1ndifferentpositions of the sleeve, the ot er row of teeth being adaptedto couple the 'non-displaceable sun-wheel to rotatin and:A

stationary parts of' the gearing in di erent positions o the saidsleeve.

so arranged vwit-h .respecttonsun-wheel to stationary or rotatable partsof the'gearing, respectively, in its different po- 4. In aplanet-wheelgearing, the combination with two sets of planet-wheels ositivelyconnected with one another, of livin'gand driven members in positiveconnection with the said lanet-wheels, a non-displaceable sun-whee forone set of ,planet-j wheels, said isunheel having inner clutch teeth,andan' axially movable sleeve withA a plurality of toothed rims formedthereup the together adapte to couple the said non-dis- 130.l

placeable sun-wheel to rotating or stationar parts of the gearing,respectively, in' the ditferent positions of the sleeve.

5. In a planet-wheel gearing, the combination with two sets ofplanet-wheels onnected with one another, of an internally toothed rimand a non-displaceable sunwheel meshing with one set of planet-wheels,driving land driven members in positive connect-ion with said.v sets ofplanet-wheels, inner clutch teeth in the bore of said sun-wheel, acoupling sleeve axially movable in the bore of the said sun-wheel, aplurality of toothed rims upon the said coupling sleeve, one of whichconstitutes the sun-'wheel of the other planet-wheel gearing, While theyare together adapted to couple the said non-displaceable sun-wheel toarotating member or with stationaryparts of the gearing, respectively, inthe different positlons of the sleeve, and means for shifting the saidsleeve. y

In testimony whereof I have signed my name to this speciticationin thepresence of two subscribing witnesses.

. FRANZ WINKLERi Witnesses J EANl GRUND, CARL GRUND.

